#region Using Directives and Copyright Notice

// Copyright (c) 2007-2010, Computer Consultancy Pty Ltd
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//     * Neither the name of the Computer Consultancy Pty Ltd nor the
//       names of its contributors may be used to endorse or promote products
//       derived from this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
// ARE DISCLAIMED. IN NO EVENT SHALL COMPUTER CONSULTANCY PTY LTD BE LIABLE 
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
// DAMAGE.

using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;

#endregion

namespace Interlace.NamedObjects
{
    class NamedObjectRangeSet : List<NamedObjectRange>
    {
        static readonly Regex _splitter = new Regex("[,;]");
        const string _seperator = "; ";

        public NamedObjectRangeSet()
        {
        }

        public void ReplaceWith(string text)
        {
            string[] parts = _splitter.Split(text);

            Clear();

            foreach (string part in parts)
            {
                string trimmedPart = part.Trim();

                if (trimmedPart == "") continue;

                Add(new NamedObjectRange(trimmedPart));
            }
        }

        public void GetSelectionFor(NamedObjectRange range, out int offset, out int length)
        {
            int currentOffset = 0;

            foreach (NamedObjectRange candidateRange in this)
            {
                if (candidateRange == range)
                {
                    offset = currentOffset;
                    length = candidateRange.Text.Length;

                    return;
                }
                else
                {
                    currentOffset += candidateRange.Text.Length;
                    currentOffset += _seperator.Length;
                }
            }

            offset = 0;
            length = 0;
        }

        public bool HasUnvaluedRange
        {
            get 
            {
                foreach (NamedObjectRange range in this)
                {
                    if (range.Value == null) return true;
                }

                return false;
            }
        }

        public string Text
        {
            get
            {
                StringBuilder builder = new StringBuilder();

                foreach (NamedObjectRange range in this)
                {
                    if (builder.Length > 0) builder.Append(_seperator);
                    builder.Append(range.Text);
                }

                return builder.ToString();
            }
        }
    }
}
